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By plotting the left-hand term against t, the slope of the line will be determined by the permeability k
multiplied by C. Examples of some results of the falling head experiments are discussed in the results
(figures 4.14a and 4.14b).

3.4 3D Geological modelling

The three-dimensional geological model of eastern Favignana is made using the Petrel software package
from Schlumberger. The integration from seismic evaluation to dynamic modelling makes it useful for a
variety of applications, including the creation of static and dynamic models from well data. In this study
the topography of Favignana is available as digital AutoCAD data, which is subsequently exported to a
format suitable for Petrel (see tutorial in appendix E). The outcrop data from the fieldwork campaign is
converted in pseudo-wells, which are placed at the correct location with GPS data. Finally, the facies
model is generated using a multi-point statistics algorithm that uses the pseudo-well data and additional
geological thoughts as input. Chapter 6 discusses the entire modelling process in more detail.

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